Large Octagon flat back acrylic (plastic) rhinestones are 40x30mm or 1 37/64" x 1 3/16" Height: 7mm (9/32"). Includes 4 High Quality Lead Free Acrylic Gems They are lead free (safe for skin!) and used as body gems! Good for creations at scrapbook and craft works, Perfect for card making, scrapbooks and body art. Professional grade for jewelry making, fabric embellishments, and commercial displays. Add your own glue. Used for cards and invitations, jewelry, face painting, costume making, cosplay embelishments These Octagon flat back Jewels are 40x30mm or 1 37/64" x 1 3/16". Height: 7mm (9/32"). Available in multiple colors with a silver foil backing as well as solid Opaque Black. Perfect for jewelry making, cosplay costume creation. Large color and size variation. Made by Allstarco, your acrylic gems source.